Star · F0V
47 Cas
47 Cas is a main-sequence star of spectral type F0V in the constellation Cassiopeia, 108.1 light-years from the Sun.
| Other names | HIP 9727 |
|---|---|
| Constellation | Cassiopeia |
| Distance | 108.1 light-years (33.2 pc) |
| Apparent magnitude | magnitude 5.27 |
| Absolute magnitude | magnitude 2.67 |
| Spectral type | F0V |
| Surface temperature | 7,190 K |
| Luminosity | 7.32 L☉ |
| Radius | 1.75 R☉ |
| Mass | 1.65 M☉ (estimated) |
| Right ascension (J2000) | 2h 05m 07.4s |
| Declination (J2000) | +77° 16′ 53″ |
| Space velocity (relative to the Sun) | 30.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.27). Visible from the whole Northern Hemisphere and south to latitude 13° S. North of latitude 13° N it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1918. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.9 million years.
The Sun seen from there
From a planet around 47 Cas, the Sun would look like a star of magnitude 7.43, in the direction where our sky has the constellation Apus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 11906 9.40 light-years
- HIP 3132 11.9 light-years
- HIP 7346 12.0 light-years
- HIP 1347 12.5 light-years
- HIP 13179 13.1 light-years
- 48 Cas 13.3 light-years
- WISEA J001449.96+795116.1 14.9 light-years
- HIP 22152 16.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.